Worst possible experience at Porsche SA workshop in Sandton

Who ever brings his/her car for service or maintenance at Porsche in Sandton should Make sure that they are not suggesting useless works (this happened to me as they suggested to do the whole break disks and pads after 17000 km all driven between Rosebank and Sandton) just to charge heavy expenses That they get a formal signed approval before they do any work They provide the used parts they replaced and give proof that they installed brand new parts (this subject is a black Box)

I have had the most terrible experience with attendants unable to explain or demonstrate anything and kept lying and contradicting

My next car will be a Mercedes